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Fernandes AL, Pinto J, Figueiredo C, Santos N, Campos V, Nascimento AC, Bento C, Costa L, Werneck F, Moura P. ANEMIA APLÁSTICA EM PEDIATRIA: DIAGNÓSTICO E TRATAMENTO. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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de Brito RJVC, do Carmo RF, Silva BMS, Barbosa Júnior WL, Vasconcelos LRS, Pereira LMMB, Moura P. Lack of Association of Polymorphisms in IL22 and IL22RA1 Genes with Fibrosis Severity in Patients with Chronic Hepatitis C. Viral Immunol 2022; 35:509-513. [PMID: 35838587 DOI: 10.1089/vim.2022.0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The IL-22 pathway has been shown to play an important role in the pathogenesis of liver fibrosis. However, little is known about the role of single-nucleotide polymorphisms (SNPs) in IL-22-related genes in relation to the severity of liver fibrosis. This study aimed to investigate the association of polymorphisms in IL22 and IL22RA1 genes with the severity of liver fibrosis in patients with chronic hepatitis C. A total of 326 patients (165 with mild fibrosis and 161 with severe fibrosis) were included. Four SNPs in IL22 (rs1179251, rs2227473, rs1012356, and rs2227485) and two in IL22RA1 (rs4648936 and rs3795299) were evaluated by real-time PCR. No significant association was observed between the polymorphisms studied and the severity of liver fibrosis. The SNPs rs1179251, rs2227473, rs1012356, and rs2227485 in IL22 and rs4648936 and rs3795299 in IL22RA1 may not be involved in the pathogenesis of liver fibrosis in patients with chronic hepatitis C.
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Affiliation(s)
- Rodrigo José Videres Cordeiro de Brito
- Postgraduate Program in Health Sciences, University of Pernambuco (UPE), Recife, Brazil
- College of Medicine, Federal University of the São Francisco Valley (UNIVASF), Petrolina, Brazil
| | | | | | | | | | - Leila Maria Moreira Beltrão Pereira
- Postgraduate Program in Health Sciences, University of Pernambuco (UPE), Recife, Brazil
- Faculty of Medicine, University of Pernambuco (UPE), Recife, Brazil
- Liver Institute of Pernambuco (IFP), Recife, Brazil
| | - Patrícia Moura
- Postgraduate Program in Health Sciences, University of Pernambuco (UPE), Recife, Brazil
- Institute of Biological Sciences, University of Pernambuco (UPE), Recife, Brazil
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Gouveia P, Lopes D, Henriques A, Moura P, Pires A. Psychosocial risks among the healthcare workforce working in COVID services: findings from a cross-sectional study on psychosocial risks. Eur Psychiatry 2022. [PMCID: PMC9562738 DOI: 10.1192/j.eurpsy.2022.653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Introduction Poor management in healthcare can have significant consequences in the workers’ health, performance, and quality of care. Several risks worsened during the COVID-19 pandemic, namely among the workforce caring for patients with suspected/confirmed COVID-19 infection. Objectives We aimed to assess psychosocial risks among a sample of 235 healthcare workers deployed in COVID-19-related services in Portugal’s Lower Alentejo. Methods Participants filled out with ten sociodemographic questions and the Euro-Portuguese medium version of the COPSOQ II questionnaire. Data collection occurred February 2021. Tertiles were used to render a traffic light risk categorization. Results were processed with qualitative and quantitative descriptive statistical analysis. To compare groups relative to each outcome, t-tests were used for variables with two categories. Whenever data was not normally distributed, Mann-Whitney tests were used. For variables with more than two groups non-parametric Kruskal-Wallis was applied. Bonferroni correction was also applied, testing each individual hypothesis at the level of significance of αi=0.05/29. A statistically significant difference between two groups did not necessarily yield a different risk colour. Results Overall, cognitive demands, emotional demands and influence at work showed the highest risk, while 19 domains showed intermediate risk. The burnout domain showed to be highest among nurses and operational assistants working in the Intensive Care Unit. Several associations between COPSOQ domains and sociodemographic variables are also discussed. Conclusions Assessment of psychosocial stressors in healthcare units is needed to promote risk reduction policies and workplace reforms. Accessible occupational services, therapeutic and rehabilitative strategies should play a role in improving health hazards in unhealthy workplaces. Disclosure No significant relationships.
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Lima CN, Oliveira WF, Silva PMM, Filho PEC, Juul-Madsen K, Moura P, Vorup-Jensen T, Fontes A. Mannose-binding lectin conjugated to quantum dots as fluorescent nanotools for carbohydrate tracing. Methods Appl Fluoresc 2022; 10. [PMID: 35145049 DOI: 10.1088/2050-6120/ac4e72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/24/2022] [Indexed: 11/11/2022]
Abstract
Quantum dots (QDs) have stood out as nanotools for glycobiology due to their photostability and ability to be combined with lectins. Mannose-binding lectin (MBL) is involved in the innate immune system and plays important roles in the activation of the complement cascade, opsonization, and elimination of apoptotic and microbial cells. Herein, adsorption and covalent coupling strategies were evaluated to conjugate QDs to a recombinant human MBL (rhMBL). The most efficient nanoprobe was selected by evaluating the conjugate ability to labelCandida albicansyeasts by flow cytometry. The QDs-rhMBL conjugate obtained by adsorption at pH 6.0 was the most efficient, labelingca.100% of cells with the highest median fluorescence intensity. The conjugation was also supported by Fourier transform infrared spectroscopy, zeta potential, and size analyses.C. albicanslabeling was calcium-dependent; 12% and <1% of cells were labeled in buffers without calcium and containing EDTA, respectively. The conjugate promoted specific labeling (based on cluster effect) since, after inhibition with mannan, there was a reduction of 80% in cell labeling, which did not occur with methyl-α-D-mannopyranoside monosaccharide. Conjugates maintained colloidal stability, bright fluorescence, and biological activity for at least 8 months. Therefore, QDs-rhMBL conjugates are promising nanotools to elucidate the roles of MBL in biological processes.
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Affiliation(s)
- Carinna N Lima
- Department of Biophysics and Radiobiology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Weslley F Oliveira
- Departament of Biochemistry, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Paloma M M Silva
- Department of Biophysics and Radiobiology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Paulo E Cabral Filho
- Department of Biophysics and Radiobiology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Kristian Juul-Madsen
- Biophysical Immunology Laboratory, Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Patrícia Moura
- Biological Science Institute, University of Pernambuco, Recife, Pernambuco, Brazil
| | - Thomas Vorup-Jensen
- Biophysical Immunology Laboratory, Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Adriana Fontes
- Department of Biophysics and Radiobiology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
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Ferreira-Facio CDS, Botafogo V, Ferrão PM, Canellas MC, Milito CB, Romano S, Lopes DV, Teixeira LC, Oliveira E, Bruno-Riscarolli E, Mello FV, Siqueira PFR, Moura P, Macedo FN, Forny DN, Simião L, Pureza AL, Land MGP, Pedreira CE, van Dongen JJM, Orfao A, da Costa ES. Flow Cytometry Immunophenotyping for Diagnostic Orientation and Classification of Pediatric Cancer Based on the EuroFlow Solid Tumor Orientation Tube (STOT). Cancers (Basel) 2021; 13:cancers13194945. [PMID: 34638431 PMCID: PMC8508207 DOI: 10.3390/cancers13194945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 11/15/2022] Open
Abstract
Simple Summary Pediatric solid tumors are a heterogenous group of diseases that comprise ≈ 40% of all pediatric cancers, early diagnosis being key for improved survival. Here we designed, tested, and validated a single eight-color tube for the diagnostic screening of pediatric cancer—solid tumor orientation tube (STOT)—based on multiparameter flow cytometry vs. conventional diagnostic procedures. Prospective clinical validation of STOT in 149 samples (63 tumor mass, 38 bone marrow, 30 lymph node, and 18 body fluid samples) screened for pediatric cancer, apart from 26 blood specimens that were excluded from analysis, showed concordant results with the final WHO/ICCC-3 diagnosis in 138/149 cases (92.6%). This included correct diagnostic orientation by STOT in 43/44 (98%) malignant and 4/4 (100%) benign non-hematopoietic tumors, together with 28/38 (74%) leukemia/lymphoma cases. The only recurrently missed diagnosis was Hodgkin lymphoma (0/8), which would require additional markers. These results support the use of STOT as a complementary tool for fast and accurate diagnostic screening, orientation, and classification of pediatric cancer in suspicious patients. Abstract Early diagnosis of pediatric cancer is key for adequate patient management and improved outcome. Although multiparameter flow cytometry (MFC) has proven of great utility in the diagnosis and classification of hematologic malignancies, its application to non-hematopoietic pediatric tumors remains limited. Here we designed and prospectively validated a new single eight-color antibody combination—solid tumor orientation tube, STOT—for diagnostic screening of pediatric cancer by MFC. A total of 476 samples (139 tumor mass, 138 bone marrow, 86 lymph node, 58 peripheral blood, and 55 other body fluid samples) from 296 patients with diagnostic suspicion of pediatric cancer were analyzed by MFC vs. conventional diagnostic procedures. STOT was designed after several design–test–evaluate–redesign cycles based on a large panel of monoclonal antibody combinations tested on 301 samples. In its final version, STOT consists of a single 8-color/12-marker antibody combination (CD99-CD8/numyogenin/CD4-EpCAM/CD56/GD2/smCD3-CD19/cyCD3-CD271/CD45). Prospective validation of STOT in 149 samples showed concordant results with the patient WHO/ICCC-3 diagnosis in 138/149 cases (92.6%). These included: 63/63 (100%) reactive/disease-free samples, 43/44 (98%) malignant and 4/4 (100%) benign non-hematopoietic tumors together with 28/38 (74%) leukemia/lymphoma cases; the only exception was Hodgkin lymphoma that required additional markers to be stained. In addition, STOT allowed accurate discrimination among the four most common subtypes of malignant CD45− CD56++ non-hematopoietic solid tumors: 13/13 (GD2++ numyogenin− CD271−/+ nuMyoD1− CD99− EpCAM−) neuroblastoma samples, 5/5 (GD2− numyogenin++ CD271++ nuMyoD1++ CD99−/+ EpCAM−) rhabdomyosarcomas, 2/2 (GD2−/+ numyogenin− CD271+ nuMyoD1− CD99+ EpCAM−) Ewing sarcoma family of tumors, and 7/7 (GD2− numyogenin− CD271+ nuMyoD1− CD99− EpCAM+) Wilms tumors. In summary, here we designed and validated a new standardized antibody combination and MFC assay for diagnostic screening of pediatric solid tumors that might contribute to fast and accurate diagnostic orientation and classification of pediatric cancer in routine clinical practice.
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Affiliation(s)
- Cristiane de Sá Ferreira-Facio
- Internal Medicine Postgraduate Program, Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil; (C.d.S.F.-F.); (V.B.); (L.C.T.); (E.O.); (E.B.-R.); (P.F.R.S.); (M.G.P.L.)
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Vitor Botafogo
- Internal Medicine Postgraduate Program, Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil; (C.d.S.F.-F.); (V.B.); (L.C.T.); (E.O.); (E.B.-R.); (P.F.R.S.); (M.G.P.L.)
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Patrícia Mello Ferrão
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Maria Clara Canellas
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Cristiane B. Milito
- Department of Pathology, Faculty of Medicine, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil;
| | - Sérgio Romano
- Laboratory of Anatomical Pathology and Cytopathology, Instituto Nacional de Câncer (INCa), Rio de Janeiro 20220-400, Brazil;
| | - Daiana V. Lopes
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Lisandra C. Teixeira
- Internal Medicine Postgraduate Program, Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil; (C.d.S.F.-F.); (V.B.); (L.C.T.); (E.O.); (E.B.-R.); (P.F.R.S.); (M.G.P.L.)
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Elen Oliveira
- Internal Medicine Postgraduate Program, Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil; (C.d.S.F.-F.); (V.B.); (L.C.T.); (E.O.); (E.B.-R.); (P.F.R.S.); (M.G.P.L.)
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Enrico Bruno-Riscarolli
- Internal Medicine Postgraduate Program, Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil; (C.d.S.F.-F.); (V.B.); (L.C.T.); (E.O.); (E.B.-R.); (P.F.R.S.); (M.G.P.L.)
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Fabiana V. Mello
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Patrícia F. R. Siqueira
- Internal Medicine Postgraduate Program, Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil; (C.d.S.F.-F.); (V.B.); (L.C.T.); (E.O.); (E.B.-R.); (P.F.R.S.); (M.G.P.L.)
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Patrícia Moura
- I’Dor Institute, Hospital Estadual da Criança, Rio de Janeiro 21330-400, Brazil; (P.M.); (F.N.M.)
| | - Francisco Nicanor Macedo
- I’Dor Institute, Hospital Estadual da Criança, Rio de Janeiro 21330-400, Brazil; (P.M.); (F.N.M.)
| | - Danielle N. Forny
- Department of Pediatric Surgery, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil;
| | - Luíza Simião
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Ana Luíza Pureza
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
| | - Marcelo Gerardin Poirot Land
- Internal Medicine Postgraduate Program, Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil; (C.d.S.F.-F.); (V.B.); (L.C.T.); (E.O.); (E.B.-R.); (P.F.R.S.); (M.G.P.L.)
| | - Carlos Eduardo Pedreira
- Systems and Computing Engineering Department (COPPE-PESC), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-972, Brazil;
| | - Jacques J. M. van Dongen
- Department of Immunohematology and Blood Transfusion (IHB), Leiden University Medical Center (LUMC), 2333 ZA Leiden, The Netherlands;
| | - Alberto Orfao
- Translational and Clinical Research Program, Centro de Investigación del Cáncer and IBMCC (CSIC-University of Salamanca), Cytometry Service, NUCLEUS, Department of Medicine, University of Salamanca (USAL), Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain
- Correspondence: (A.O.); (E.S.d.C.); Tel.: +34-9232-9481 (A.O.); +55-21-3938-4725 (E.S.d.C.)
| | - Elaine Sobral da Costa
- Internal Medicine Postgraduate Program, Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil; (C.d.S.F.-F.); (V.B.); (L.C.T.); (E.O.); (E.B.-R.); (P.F.R.S.); (M.G.P.L.)
- Cytometry Service, Institute of Paediatrics and Puericultura Martagão Gesteira (IPPMG), Faculty of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-612, Brazil; (P.M.F.); (M.C.C.); (D.V.L.); (F.V.M.); (L.S.); (A.L.P.)
- Correspondence: (A.O.); (E.S.d.C.); Tel.: +34-9232-9481 (A.O.); +55-21-3938-4725 (E.S.d.C.)
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Bastos Ferreira AP, Cassilhas APP, Moura P, Sampaio Rocha-Filho PA. Intrinsic and Extrinsic Cell Apoptotic Pathways in Patients with HTLV-1-Associated Myelopathy/Tropical Spastic Paraparesis: A Systematic Review. Viral Immunol 2021; 34:380-391. [PMID: 33470891 DOI: 10.1089/vim.2020.0131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We aimed to verify the influence of intrinsic and extrinsic cell apoptotic pathways on the inhibition of cellular apoptosis in patients with tropical spastic paralysis/myelopathy related to human T cell lymphotropic virus type 1. The databases accessed were PubMed, Scopus, Science Direct, and Web of Science. Neither the time of publishing nor the language of the articles was limited. The descriptors used for this systematic literature review were: Tropical Paraparesis, Proto-Oncogenic Protein C, Bcl-2, Bcl-X Protein, Bax protein, Fas ligand (FasL) protein, Fas receptor, TNF-related apoptosis-inducing ligand and Fas-associated protein with death domain (FADD)-like apoptosis regulating. The search resulted in 546 articles from which 9 articles were selected for analysis; ranging from serum levels of Bcl-2, Fas and tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) measured by enzyme-linked immunosorbent assay and the levels of cellular expression of Bcl-2 and Bcl-xL the TCD4+ lymphocytes accessed by western blot. Most studies accessed either gene expression or polymorphism of Fas, FasL, and TRAIL in patients with HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), whereas one study used flow cytometry and fluorescence to determine Fas expression. Increased Bcl-xL expression inhibited T lymphocyte apoptosis, whereas Bcl-2, serum levels, and cellular expression did not influence T lymphocyte apoptosis and serum levels of Fas were significantly higher and associated with markers of leukocyte activation in patients with HAM/TSP. In addition, Fas polymorphism (FAS-670AA) was associated with higher proviral load. There is a need for additional research on this issue since the number of patients was small and the studies presented higher heterogeneity.
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Affiliation(s)
- Ana Patrícia Bastos Ferreira
- Post-graduation Program in Neuropsychiatry and Behavioral Sciences (POSNEURO), Federal University of Pernambuco (UFPE), Recife, Brazil
| | | | | | - Pedro Augusto Sampaio Rocha-Filho
- Post-graduation Program in Neuropsychiatry and Behavioral Sciences (POSNEURO), Federal University of Pernambuco (UFPE), Recife, Brazil.,Division of Neuropsychiatry, Centro de Ciências Médicas, Federal University of Pernambuco (UFPE), Recife, Brazil
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Schneiderman E, Schramm P, Hui J, Wilson PD, Moura P, German Z, McCann A, Newton M. Randomized Trial of 2 Self-Titrated Oral Appliances for Airway Management. J Dent Res 2020; 100:155-162. [PMID: 32942939 DOI: 10.1177/0022034520956977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The effectiveness and predictability of 2 different oral appliance (OA) designs to reduce the respiratory event index (REI) in moderate and severe obstructive sleep apnea (OSA) patients requires elucidation. The primary aim of the trial was to determine if 2 widely used midline-traction and bilateral-thrust OA designs differ in effectiveness to reduce the REI within a single test population categorized by OSA severity. Moderate and severe adult OSA patients, who were previously prescribed continuous positive airway pressure therapy (CPAP) but were dissatisfied with it (n = 56), were studied by home-polygraphy in a randomized crossover trial using either midline-traction with restricted mouth opening (MR) or bilateral thrust with opening permitted (BP) design OAs. OAs were used nightly for 4 wk (T2) followed by a 1-wk washout period, then 4 wk (T4) using the alternate OA. REI and oxygen saturation (SaO2) were primary outcomes, while predictability and efficacy comparison of the 2 OAs were secondary outcomes. Thirty-six participants had used MR and BP OAs during both 4-wk study legs. Twenty (55.6%) MR OA-using participants, 25 (69.4%) BP OA-using participants, and 16 (44.4%) participants using both OAs had significant REI reductions. Overall baseline (T0) median REI (interquartile range) of 33.7 (20.7-54.9) was reduced to 18.0 (8.5-19.4) at T2 and to 12.5 (8.2-15.9) at T4 (P < 0.001). Comparison of the 2 sequence groups' (MR-BP and BP-MR) REI showed the median differences between T0 and T2 and T4 were highly significant (P < 0.001). Regression analysis predicted about half of all users will have REIs between 8 and 16 after 2 mo. Baseline overjet measures >2.9 mm predicted greater OA advancement at T4. Mean and minimum SaO2 did not change significantly from T0 to T2 or T4. MR and BP OA designs similarly attenuated REI in moderate and severe OSA individuals who completed the 8-wk study protocol with greater REI reduction in those with severe OSA (ClinicalTrials.gov NCT03219034).
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Affiliation(s)
- E Schneiderman
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - P Schramm
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - J Hui
- Department of Comprehensive Dentistry, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - P D Wilson
- Department of Comprehensive Dentistry, Texas A&M University College of Dentistry, Dallas, TX, USA.,University of New England College of Dental Medicine, Portland, ME, USA
| | - P Moura
- Department of Diagnostic Sciences, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - Z German
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - A McCann
- Departments of Academic Affairs and Dental Hygiene, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - M Newton
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX, USA
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da Silva Cezar RD, da Silva Castanha PM, Matos Freire N, Mola C, Feliciano do Carmo R, Tenório Cordeiro M, Baptista P, Silva Vasconcelos LR, Moura P, da Silva Teixeira VG. Association between interferon lambda 3 rs12979860 polymorphism and clinical outcome in dengue virus-infected children. Int J Immunogenet 2020; 47:351-358. [PMID: 32065450 DOI: 10.1111/iji.12477] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 12/26/2019] [Accepted: 01/13/2020] [Indexed: 01/01/2023]
Abstract
Single nucleotide polymorphisms (SNPs) in immune-related genes have been shown to play a role in driving the development of the severe phenotypes of dengue virus (DENV) infection. We assessed the association between IFNL3 gene SNP (rs12979860) and dengue clinical outcomes in children. Patients with dengue-related symptoms (aged 1-15 years) admitted at a public hospital in Northeast Brazil were invited to participate. The association between rs12979860 polymorphism and dengue classification and clinical signs and symptoms were analysed. A total of 206 DENV-infected children were included: 53.4% of the infections were classified as severe dengue. The T allele carriers had higher risk of developing severe dengue when compared to CC genotype carriers (OR: 1.81; 95% CI: 0.98-3.32 p = .054). The T allele carriers also showed longer fever episodes when compared to patients with the CC genotype (OR: 1.90; 95%CI: 1.07-3.38; p = .027). On the other hand, the ones carrying the CT/TT genotype had 70% lower chance of developing thrombocytopenia when compared to those with the CC genotype (OR: 0.30; 95%CI: 0.08-0.88; p = .042). Our findings demonstrated that the T allele carriers of the IFNL3 gene had higher risk of developing severe dengue, suggesting a link between IFN-λ expression and DENV immunopathogenesis.
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Affiliation(s)
| | | | | | - Carla Mola
- Instituto de Ciências Biológicas, Universidade de Pernambuco, Recife, Brasil
| | | | | | - Paulo Baptista
- Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
| | - Luydson Richardson Silva Vasconcelos
- Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
- Instituto Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Brasil
- Instituto do Fígado, Recife, Brasil
| | - Patrícia Moura
- Instituto de Ciências Biológicas, Faculdade de Ciências Médicas, Recife, Brasil
- Campus Arcoverde, Universidade de Pernambuco, Recife, Brasil
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9
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Puccioni-Sohler M, Grassi MFR, Galvão-Castro B, Caterino A, Proietti ABDFC, Vicente ACP, Galvão-Castro AV, Vallinoto AC, Paiva A, Penalva A, Rosadas C, Miyashiro D, Barbosa EF, Carvalho EMD, Batista EDS, Smid J, Casseb J, Vidal J, Sousa MS, Viana MGDC, Bastos MDS, Lírio M, Boa-Sorte N, Ferreira OC, Takayanagui O, Moura P, Rocco R, Cunha RG, Haddad SK, Assone T, Araújo THA. Increasing awareness of human T-lymphotropic virus type-1 infection: a serious, invisible, and neglected health problem in Brazil. Rev Soc Bras Med Trop 2019; 52:e20190343. [PMID: 31618310 DOI: 10.1590/0037-8682-0343-2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 08/21/2019] [Indexed: 11/22/2022] Open
Affiliation(s)
- Marzia Puccioni-Sohler
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina e Cirurgia, Rio de Janeiro, RJ, Brasil.,Universidade Federal do Rio de Janeiro, Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Rio de Janeiro, RJ, Brasil
| | - Maria Fernanda Rios Grassi
- Escola Bahiana de Medicina, Salvador, BA, Brasil.,Fundação Oswaldo Cruz, Instituto Gonçalo Moniz, Salvador, BA, Brasil
| | - Bernardo Galvão-Castro
- Escola Bahiana de Medicina, Salvador, BA, Brasil.,Fundação Oswaldo Cruz, Instituto Gonçalo Moniz, Salvador, BA, Brasil
| | | | | | | | | | | | - Arthur Paiva
- Universidade Federal do Alagoas, Maceió, AL, Brasil
| | - Augusto Penalva
- Instituto de Infectologia Emilio Ribas, São Paulo, SP, Brasil
| | | | | | | | | | - Everton da Silva Batista
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina e Cirurgia, Rio de Janeiro, RJ, Brasil
| | - Jerusa Smid
- Instituto de Infectologia Emílio Ribas, São Paulo, SP, Brasil
| | - Jorge Casseb
- Instituto de Medicina Tropical da Universidade de São Paulo, São Paulo, SP, Brasil
| | - Jose Vidal
- Instituto de Infectologia Emilio Ribas/ Universidade de São Paulo, São Paulo, SP, Brasil
| | - Maisa Silva Sousa
- Universidade Federal do Pará/ Instituto Evandro Chagas, Belém, PA, Brasil
| | | | | | - Monique Lírio
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina e Cirurgia, Rio de Janeiro, RJ, Brasil
| | - Ney Boa-Sorte
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina e Cirurgia, Rio de Janeiro, RJ, Brasil
| | | | - Osvaldo Takayanagui
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | | | - Regina Rocco
- Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | | | - Simone Kashima Haddad
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Tatiane Assone
- Instituto de Medicina Tropical da Universidade de São Paulo, São Paulo, SP, Brasil
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Ortigueira J, Martins L, Pacheco M, Silva C, Moura P. Improving the non-sterile food waste bioconversion to hydrogen by microwave pretreatment and bioaugmentation with Clostridium butyricum. Waste Manag 2019; 88:226-235. [PMID: 31079635 DOI: 10.1016/j.wasman.2019.03.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 02/09/2019] [Accepted: 03/12/2019] [Indexed: 06/09/2023]
Abstract
This work targeted the energy recovery from food waste (FW), aiming at the implementation of a potentially participative process of FW conditioning before the non-sterile biological conversion to hydrogen (H2). Food waste conversion was initially performed under sterile conditions, achieving a maximum H2 productivity of 249.5 ± 24.6 mL H2 (L h)-1 and a total H2 production to 4.1 ± 0.2 L L-1. The non-sterile operation was implemented as a way of process simplification, but the total H2 production decreased by 59% due to the FW native microorganisms. To counteract this effect, FW was submitted to acid, microwave (MW), and combined acid and MW pretreatment. The application of 4 min MW, 550 W, efficiently controlled the FW microbial counts. The Clostridium butyricum bioaugmented conversion of MW-pretreated FW accelerated the H2 production to 406.2 ± 8.1 mL (L h)-1 and peaked the total H2 production and conversion yield to 4.6 ± 0.5 L L-1 and 234.6 ± 55.6 mL (g sugar)-1, respectively. These results exceeded in 63, 12 and 4%, respectively, the H2 productivity, total production and sugar conversion yield obtained under sterile conditions, and are encouraging for the future implementation of increasingly responsible waste valorisation practices.
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Affiliation(s)
- Joana Ortigueira
- LNEG, Laboratório Nacional de Energia e Geologia, Unidade de Bioenergia, Estrada do Paço do Lumiar, 1649-038 Lisboa, Portugal; Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
| | - Luís Martins
- Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
| | - Marta Pacheco
- LNEG, Laboratório Nacional de Energia e Geologia, Unidade de Bioenergia, Estrada do Paço do Lumiar, 1649-038 Lisboa, Portugal.
| | - Carla Silva
- Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
| | - Patrícia Moura
- LNEG, Laboratório Nacional de Energia e Geologia, Unidade de Bioenergia, Estrada do Paço do Lumiar, 1649-038 Lisboa, Portugal.
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11
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Lima CN, Cabral Filho PE, Santos BS, Moura P, Fontes A. Interactions of mannose binding-lectin with red blood cells by employing cationic quantum dots. Int J Biol Macromol 2019; 125:1168-1174. [DOI: 10.1016/j.ijbiomac.2018.12.098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 12/03/2018] [Accepted: 12/11/2018] [Indexed: 11/15/2022]
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12
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Albuquerque DAP, Cavalcanti IT, Vasconcelos LRS, Montenegro F, Pereira LMMB, Cavalcanti MSM, Moura P, Júnior LBC, de Almeida SMV, Beltrão EIC. Molecular profile of mannan-binding lectin in hepatitis C patients with MBL gene polymorphisms by a modified mannan-coated nitrocellulose assay. J Immunol Methods 2018; 460:101-106. [PMID: 30056939 DOI: 10.1016/j.jim.2018.06.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 06/25/2018] [Accepted: 06/25/2018] [Indexed: 02/08/2023]
Abstract
The aim of this study was to develop an assay to analyze the serum profile of Mannose-binding lectin (MBL) through a simple and "in-house" method (called "dot-N-man"). Furthermore, the study attempted to associate molecular masses of MBL to the profile of MBL gene polymorphisms in patients with hepatitis C. Heterogeneity in molecular masses of MBL is due to the impairment of oligomers formation, which is linked to genetic polymorphisms in the MBL gene. Individuals with AA genotype (wild-type) produce high-molecular-mass proteins, whereas AO and OO individuals produce intermediate and low-molecular-mass proteins, respectively. Sera of thirty patients carrying the hepatitis C virus (HCV) were investigated using MBL binding assay with mannan-coated nitrocellulose (dot-N-man). Purified MBL was evaluated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting. Dot-N-Man assay yielded MBL with molecular masses ranging between 55 and 320 kDa, comparable to low and high molecular mass forms of MBL. Nonreducing SDS-PAGE showed high molecular mass bands in all AA individuals while bands of 270 and 205 kDa were observed in sera for a number of patients with AO and OO genotypes, respectively. Immunoblotting confirmed the MBL samples obtained from the dot-N-man. These results provide new insights to understand the MBL molecular forms profile in patients infected with HCV- which could be useful in future investigations on the influence of the MBL structure/genotype on both the progression of infection and the response to hepatitis C therapy.
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Affiliation(s)
- Diego A P Albuquerque
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - Igor T Cavalcanti
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - Luydson R S Vasconcelos
- Instituto do Fígado e Transplantes de Pernambuco - IFP, Recife, PE, Brazil; Faculdade de Ciências Médicas, Universidade de Pernambuco (UPE), Recife, PE, Brazil; Instituto de Pesquisas Aggeu Magalhães - FIOCRUZ, Recife, PE, Brazil
| | - Francisco Montenegro
- Laboratório de Biologia Molecular de Vírus, Instituto de Ciências Biológicas, Universidade de Pernambuco, Recife, PE, Brazil
| | - Leila M M B Pereira
- Instituto do Fígado e Transplantes de Pernambuco - IFP, Recife, PE, Brazil; Faculdade de Ciências Médicas, Universidade de Pernambuco (UPE), Recife, PE, Brazil
| | - Maria S M Cavalcanti
- Laboratório de Biologia Molecular de Vírus, Instituto de Ciências Biológicas, Universidade de Pernambuco, Recife, PE, Brazil; Faculdade de Ciências Médicas, Universidade de Pernambuco (UPE), Recife, PE, Brazil
| | - Patrícia Moura
- Laboratório de Biologia Molecular de Vírus, Instituto de Ciências Biológicas, Universidade de Pernambuco, Recife, PE, Brazil; Faculdade de Ciências Médicas, Universidade de Pernambuco (UPE), Recife, PE, Brazil
| | - Luiz B C Júnior
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, PE, Brazil; Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - Sinara Mônica Vitalino de Almeida
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, PE, Brazil; Universidade de Pernambuco (UPE), Faculdade de Ciências, Educação e Tecnologia de Garanhuns (FACETEG), Garanhuns, PE, Brazil.
| | - Eduardo I C Beltrão
- Laboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, PE, Brazil; Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Recife, PE, Brazil
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13
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de Lima RE, de Holanda Martins CM, do Carmo RF, Aroucha DCBL, Pereira LMMB, Vasconcelos LRS, Moura P. Two sides of a coin: GG genotype of C7 provides protection against fibrosis severity while showing a higher risk for hepatocellular carcinoma in patients with hepatitis C. Hum Immunol 2018; 79:702-707. [PMID: 29966690 DOI: 10.1016/j.humimm.2018.06.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/22/2018] [Accepted: 06/26/2018] [Indexed: 12/22/2022]
Abstract
The complement system (CS) is a key element of immunity against pathogens but also seems to influence other events, such as tumorigenesis and tissue repair. Complement component 7 (C7) is a key component of the lytic pathway of CS, leading to the formation of the membrane attack complex (MAC). This study aimed to investigate the existence of the association of a polymorphism in the C7 gene, rs1063499, with hepatic fibrosis and the occurrence of hepatocellular carcinoma (HCC) in patients with hepatitis C. We analyzed 456 samples from patients with chronic hepatitis C. Real-time PCR was used for allelic discrimination. Patients were classified by their METAVIR score as F1 (n = 100), F2 (n = 83), F3 (n = 101) or F4 (n = 66); 106 patients were diagnosed with HCC. Patients carrying the G/G genotype of C7 had a lower chance of developing severe fibrosis in the recessive model (p = 0.042; OR: 0.65 95% CI 0.41-1.02). However, the G/G genotype frequency was higher in patients with HCC (P = 0.01; OR: 2.07 95% CI 1.20-3.53) and in those with larger tumors (p = 0.04). The G/G C7 genotype seems to be a protective factor against advanced fibrosis; however, it was associated with a higher risk of HCC and the occurrence of larger hepatic nodules, suggesting the involvement of C7 in the physiopathogenesis of HCC and fibrosis in patients with hepatitis C virus (HCV).
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Affiliation(s)
- Raul Emídio de Lima
- Institute of Biological Sciences/ICB-UPE, University of Pernambuco, Brazil; Institute Aggeu Magalhães/IAM-FIOCRUZ-PE, Brazil
| | | | | | - Dayse Celia Barbosa Lins Aroucha
- Institute of Liver and Transplantation of Pernambuco/IFP, Brazil; Faculty of Medical Sciences/FCM-UPE, University of Pernambuco, Brazil
| | | | | | - Patrícia Moura
- Institute of Biological Sciences/ICB-UPE, University of Pernambuco, Brazil
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Abstract
Liver fibrosis is the result of an exacerbated wound-healing response associated with chronic liver injury. Advanced liver fibrosis results in cirrhosis, liver failure, and portal hypertension and frequently requires liver transplantation. The host immune response has an important role driving fibrosis deposition by activating hepatic stellate cells (HSCs). Interleukin-22 (IL-22) is a cytokine that plays a key role in promoting antimicrobial immunity and tissue repair at barrier surfaces. Data from literature suggest that IL-22 has a protective role in the liver by reducing fibrosis in some pathological conditions, however the results are contradictory. This review highlights current knowledge of IL-22' role in chronic liver injury, as well as its therapeutic potential for the treatment of chronic liver injury.
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Affiliation(s)
- Rodrigo F Carmo
- Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Brazil.
| | - Maria S M Cavalcanti
- Instituto de Ciências Biológicas, Universidade de Pernambuco (UPE), Recife, Brazil
| | - Patrícia Moura
- Instituto de Ciências Biológicas, Universidade de Pernambuco (UPE), Recife, Brazil
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15
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Medeiros FS, Mendonça TFD, Lopes KADM, França LMDC, Silva ASD, Vasconcelos LRS, Oliveira MDCVCD, Anjos ACMD, Hatzlhofer BLD, Bezerra MAC, Araújo ADS, Moura P, Cavalcanti MDSDM. Combined genotypes of the MBL2 gene related to low mannose-binding lectin levels are associated with vaso-occlusive events in children with sickle cell anemia. Genet Mol Biol 2017; 40:600-603. [PMID: 28837214 PMCID: PMC5596363 DOI: 10.1590/1678-4685-gmb-2016-0161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 02/25/2017] [Indexed: 11/22/2022] Open
Abstract
Sickle cell anemia (SCA) presents heterogenous clinical manifestations that cannot be explained solely by alterations to hemoglobin (Hb); other components such as endothelial adhesion, thrombosis and inflammation may be involved. The mannose-binding lectin (MBL) has an important role in innate immunity and inflammatory diseases. In this report, we describe an association between MBL2 polymorphism related to low production of serum MBL and the frequency of vasoocclusive events (FVOE) in children ≤ 5 years old with SCA (p = 0.0229; OR 5.55; CI 1.11-27.66). Further studies are needed to explore the role of low MBL2 in the pathophysiology of vasoocclusive events in SCA.
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Affiliation(s)
- Fernanda Silva Medeiros
- Instituto de Ciências Biológicas/Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, PE, Brazil
| | - Taciana Furtado de Mendonça
- Programa de Pós-graduação em Biotecnologia (RENORBIO), Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | | | | | - Andreia Soares da Silva
- Instituto de Ciências Biológicas/Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, PE, Brazil
| | | | | | | | | | | | | | - Patrícia Moura
- Instituto de Ciências Biológicas/Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, PE, Brazil
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Ruiz E, Gullón B, Moura P, Carvalheiro F, Eibes G, Cara C, Castro E. Bifidobacterial growth stimulation by oligosaccharides generated from olive tree pruning biomass. Carbohydr Polym 2017; 169:149-156. [PMID: 28504130 DOI: 10.1016/j.carbpol.2017.04.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/03/2017] [Accepted: 04/08/2017] [Indexed: 01/02/2023]
Abstract
This work aims to evaluate the prebiotic potential of oligosaccharides (OS) obtained from autohydrolysis of olive tree pruning biomass (OTPB). Two selected fractions (F1 and F2) were characterized and used in in vitro fermentations by two Bifidobacterium spp. (B. adolescentis and B. longum) and one fecal inoculum. The fraction F1 presented a lower average degree of polymerization (DP) mainly with OS ranging from 3 to 6 DP, whereas the fraction F2 corresponded to a pool of unsubstituted and acetylated oligomers with DP between 4 and 19. In the fermentation by Bifidobacterium, F1 supported a higher biomass formation, OS consumption and organic acids production than F2. With the fecal inoculum, the accumulation of organic acids, as the sum of acetate, propionate and butyrate, was similar for F1 and F2 (107 and 101mM, respectively). The bifidobacteria counts also increased during the incubation time for both OS fractions.
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Affiliation(s)
- Encarnación Ruiz
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071, Jaén, Spain.
| | - Beatriz Gullón
- Department of Chemical Engineering, Institute of Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Patrícia Moura
- Unidade de Bioenergia, LNEG - Laboratório Nacional de Energia e Geologia, Estrada do Paço do Lumiar, 22, Lisboa 1649-038, Portugal.
| | - Florbela Carvalheiro
- Unidade de Bioenergia, LNEG - Laboratório Nacional de Energia e Geologia, Estrada do Paço do Lumiar, 22, Lisboa 1649-038, Portugal.
| | - Gemma Eibes
- Department of Chemical Engineering, Institute of Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Cristóbal Cara
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071, Jaén, Spain.
| | - Eulogio Castro
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071, Jaén, Spain.
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de Mendonça Belmont TF, do Ó KP, Soares da Silva A, de Melo Vilar K, Silva Medeiros F, Silva Vasconcelos LR, Mendonça dos Anjos AC, Domingues Hatzlhofer BL, Pitta MGDR, Bezerra MAC, Araújo ADS, de Melo Rego MJB, Moura P, Cavalcanti MDSM. Single Nucleotide Polymorphisms at +191 and +292 of Galectin-3 Gene (LGALS3) Related to Lower GAL-3 Serum Levels Are Associated with Frequent Respiratory Tract Infection and Vaso-Occlusive Crisis in Children with Sickle Cell Anemia. PLoS One 2016; 11:e0162297. [PMID: 27603703 PMCID: PMC5014331 DOI: 10.1371/journal.pone.0162297] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 08/20/2016] [Indexed: 02/04/2023] Open
Abstract
INTRODUCTION Patients with sickle cell anemia (SCA) may present chronic hemolytic anemia, vaso-occlusion and respiratory tract infection (RTI) episodes. Galectin-3 (GAL-3) is a multifunctional protein involved in inflammation, apoptosis, adhesion and resistance to reactive oxygen species. Studies point to a dual role for GAL-3 as both a circulation damage-associated molecular pattern and a cell membrane associated pattern recognition receptor. OBJECTIVE To investigate associations between the SNPs of GAL-3 gene (LGALS3) and serum levels with RTI and vaso-occlusive crisis (VOC) in children with SCA. MATERIALS AND METHODS SNPs +191 and +292 in LGALS3 were studied using the TaqMan real-time PCR system; GAL-3 serum levels were measured by ELISA. The study included 79 children with SCA ranging from 2 to 12 years old. RESULTS GAL-3 serum levels were associated with LGALS3 +191 and +292 genotypes (p <0.0001; p = 0.0169, respectively). LGALS3 +191, AA genotype was associated with low and CC with higher levels of GAL-3. For LGALS3 +292, the CC genotype was associated with lower GAL-3 and AA with higher levels. Patients with Frequency of RTI (FRTI) ≥1 presented higher frequency of +191AA (p = 0.0263) and +292AC/CC genotypes (p = 0.0320). SNP +292 was associated with Frequency of VOC (FVOC) (p = 0.0347), whereas no association was shown with SNP +191 and FVOC. However, CA/AC and AA/CC genotypes with lower GAL-3 levels showed a higher frequency in patients with FRTI ≥1 (p = 0.0170; p = 0.0138, respectively). Also, patients with FVOC ≥1 presented association with CA/AC (p = 0.0228). LGALS3 +191 and +292 combined genotypes related to low (p = 0.0263) and intermediate expression (p = 0.0245) were associated with FRTI ≥1. Lower GAL-3 serum levels were associated with FRTI ≥1 (p = 0.0426) and FVOC ≥1 (p = 0.0012). CONCLUSION Variation of GAL-3 serum levels related to SNPs at +191 and +292 may constitute a susceptibility factor for RTI and VOC frequency.
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Affiliation(s)
| | - Kleyton Palmeira do Ó
- Instituto de Ciências Biológicas e Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
| | - Andreia Soares da Silva
- Instituto de Ciências Biológicas e Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
| | - Kamila de Melo Vilar
- Laboratório de Imunomodulação e Novas Abordagens Terapêutica (LINAT), Universidade Federal de Pernambuco, Recife, Brasil
| | - Fernanda Silva Medeiros
- Instituto de Ciências Biológicas e Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
| | | | | | | | - Maíra Galdino da Rocha Pitta
- Laboratório de Imunomodulação e Novas Abordagens Terapêutica (LINAT), Universidade Federal de Pernambuco, Recife, Brasil
| | | | | | | | - Patrícia Moura
- Programa de Doutorado da Rede Nordeste de Biotecnologia, Recife, Brasil
- Instituto de Ciências Biológicas e Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
- * E-mail:
| | - Maria do Socorro Mendonça Cavalcanti
- Programa de Doutorado da Rede Nordeste de Biotecnologia, Recife, Brasil
- Instituto de Ciências Biológicas e Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
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Figueiredo GG, Cezar RD, Freire NM, Teixeira VG, Baptista P, Cordeiro M, Carmo RF, Vasconcelos LRS, Moura P. Mannose-binding lectin gene (MBL2) polymorphisms related to the mannose-binding lectin low levels are associated to dengue disease severity. Hum Immunol 2016; 77:571-5. [DOI: 10.1016/j.humimm.2016.05.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 07/17/2015] [Accepted: 05/10/2016] [Indexed: 11/30/2022]
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Sousa VCSD, Carmo RF, Vasconcelos LRS, Aroucha DCBL, Pereira LMMB, Moura P, Cavalcanti MSM. Association of Catalase and Glutathione Peroxidase 1 Polymorphisms with Chronic Hepatitis C Outcome. Ann Hum Genet 2016; 80:145-53. [PMID: 26990426 DOI: 10.1111/ahg.12152] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 02/03/2016] [Indexed: 12/14/2022]
Abstract
The hepatic damage caused by hepatitis C virus (HCV) infection is associated with the host immune response and viral regulatory factors. Catalase (CAT) and glutathione peroxidase 1 (GPX1) are antioxidant enzymes located in the peroxisomes and mitochondria, respectively, and are responsible for the control of intracellular hydrogen peroxide levels. Polymorphisms in CAT (C-262T) and GPX1 (Pro198Leu) are correlated with serum levels and enzyme activity. This study aimed to investigate the association of genetic polymorphisms of CAT C-262T (rs1001179) and GPX1 Pro198Leu (rs1050450) with different stages of liver fibrosis and development of hepatocellular carcinoma (HCC). This study included 445 patients with chronic hepatitis C, of whom 139 patients had mild fibrosis (F0-F1), 200 had moderate/severe fibrosis (F2-F4), and 106 had HCC. Genotyping of SNPs was performed by real-time PCR using TaqMan probes. The Pro/Pro genotype of GPX1 was significantly associated with fibrosis severity, HCC, Child Pugh score, and BCLC staging. Additionally, patients carrying both CT+TT genotypes in the CAT gene and the Pro/Pro genotype in the GPX1 gene had higher risk for developing moderate/severe fibrosis or HCC (p = 0.009, OR 2.40 and p = 0.002, OR 3.56, respectively). CAT and GPX1 polymorphisms may be implicated in the severity of liver fibrosis and HCC caused by HCV.
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Affiliation(s)
- Vanessa C S D Sousa
- Instituto de Ciências Biológicas - ICB, Universidade de Pernambuco - UPE, Brazil
| | - Rodrigo F Carmo
- Colegiado de Farmácia, Universidade Federal do Vale do São Francisco - UNIVASF, Brazil.,Rede Nordeste de Biotecnologia - RENORBIO, Brazil
| | - Luydson R S Vasconcelos
- Instituto do Fígado e Transplantes de Pernambuco - IFP, Brazil.,Centro de Pesquisas Aggeu Magalhães (FIOCRUZ), Brazil
| | - Dayse C B L Aroucha
- Instituto do Fígado e Transplantes de Pernambuco - IFP, Brazil.,Faculdade de Ciências Médicas, UPE, Brazil
| | - Leila M M B Pereira
- Instituto do Fígado e Transplantes de Pernambuco - IFP, Brazil.,Faculdade de Ciências Médicas, UPE, Brazil
| | - Patrícia Moura
- Instituto de Ciências Biológicas - ICB, Universidade de Pernambuco - UPE, Brazil
| | - Maria S M Cavalcanti
- Instituto de Ciências Biológicas - ICB, Universidade de Pernambuco - UPE, Brazil
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20
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Aroucha DC, Carmo RF, Vasconcelos LRS, Lima RE, Mendonça TF, Arnez LE, Cavalcanti MDSM, Muniz MTC, Aroucha ML, Siqueira ER, Pereira LB, Moura P, Pereira LMMB, Coêlho MR. TNF-αandIL-10polymorphisms increase the risk to hepatocellular carcinoma in HCV infected individuals. J Med Virol 2016; 88:1587-95. [DOI: 10.1002/jmv.24501] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Dayse Celia Aroucha
- Instituto do Fígado de Pernambuco (IFP); Recife Brasil
- Faculdade de Ciências Médicas (FCM); Universidade de Pernambuco (UPE); Recife Brasil
| | - Rodrigo Feliciano Carmo
- Colegiado de Farmácia; Universidade Federal do Vale do São Francisco (UNIVASF); Petrolina Brasil
- Rede Nordeste de Biotecnologia (RENORBIO); Recife Brasil
| | - Luydson Richardson Silva Vasconcelos
- Instituto do Fígado de Pernambuco (IFP); Recife Brasil
- Departamento de Parasitologia, Centro de Pesquisas Aggeu Magalhães (CPqAM); Fundação Oswaldo Cruz (FIOCRUZ); Recife Brasil
| | - Raul Emidio Lima
- Instituto de Ciências Biológicas (ICB); Universidade de Pernambuco (UPE); Recife Brasil
| | | | - Lucia Elena Arnez
- Laboratório de Hanseníase, Instituto Oswaldo Cruz; Fundação Oswaldo Cruz (FIOCRUZ); Rio de Janeiro Brasil
| | | | | | - Marcilio Lins Aroucha
- Centro de Ciências da Saúde (CCS); Universidade Federal de Pernambuco (UFPE); Brazil
| | | | | | - Patrícia Moura
- Instituto de Ciências Biológicas (ICB); Universidade de Pernambuco (UPE); Recife Brasil
| | | | - Maria Rosangela Coêlho
- Setor de Virologia do Laboratório de Imunopatologia Keizo-Asami (LIKA); Universidade Federal de Pernambuco (UFPE); Brazil
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21
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Mamede AC, Guerra S, Laranjo M, Santos K, Carvalho MJ, Carvalheiro T, Moura P, Paiva A, Abrantes AM, Maia CJ, Botelho MF. Oxidative Stress, DNA, Cell Cycle/Cell Cycle Associated Proteins and Multidrug Resistance Proteins: Targets of Human Amniotic Membrane in Hepatocellular Carcinoma. Pathol Oncol Res 2016; 22:689-97. [PMID: 26965246 DOI: 10.1007/s12253-016-0053-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Accepted: 03/07/2016] [Indexed: 01/03/2023]
Abstract
The anticancer effects of human amniotic membrane (hAM) have been studied over the last decade. However, the action mechanisms responsible for these effects are not fully understood until now. Previously results reported by our team proved that hAM is able to induce cytotoxicity and cell death in hepatocellular carcinoma (HCC), a worldwide high incident and mortal cancer. Therefore, this experimental study aimed to investigate the cellular targets of hAM protein extracts (hAMPE) in HCC through in vitro studies. Our results showed that hAMPE is able to modify oxidative stress environment in all HCC cell lines, as well as its cell cycle. hAMPE differently targets deoxyribonucleic acid (DNA), P21, P53, β-catenin and multidrug resistance (MDR) proteins in HCC cell lines. In conclusion, hAMPE has several targets in HCC, being clear that the success of this treatment depends of a personalized therapy based on the biological and genetic characteristics of the tumor.
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Affiliation(s)
- A C Mamede
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal. .,CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal. .,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal. .,CNC.IBILI, University of Coimbra, Coimbra, Portugal.
| | - S Guerra
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal
| | - M Laranjo
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - K Santos
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal
| | - M J Carvalho
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal.,Obstetrics Service, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - T Carvalheiro
- Blood and Transplantation Center of Coimbra, Portuguese Institute of the Blood and Transplantation, Coimbra, Portugal
| | - P Moura
- Obstetrics Service, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - A Paiva
- Cytometry Operational Management Unit, Clinical Pathology Department, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - A M Abrantes
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - C J Maia
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - M F Botelho
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
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22
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Carmo RF, Aroucha D, Vasconcelos LRS, Pereira LMMB, Moura P, Cavalcanti MSM. Genetic variation in PTX3 and plasma levels associated with hepatocellular carcinoma in patients with HCV. J Viral Hepat 2016; 23:116-22. [PMID: 26400151 DOI: 10.1111/jvh.12472] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 07/27/2015] [Indexed: 12/12/2022]
Abstract
Hepatitis C virus (HCV) is the main cause of chronic liver disease, cirrhosis and hepatocellular carcinoma (HCC) worldwide. The risk to develop HCC increases with the severity of liver inflammation and fibrosis. Long pentraxin 3 (PTX3) is a soluble pattern-recognition receptor produced by phagocytes and nonimmune cells at sites of inflammation or injury. The aim of the present study was to determine the association of PTX3 polymorphisms and its plasma levels with HCC occurrence among patients with HCV. Samples from 524 patients with chronic hepatitis C were evaluated in this study. Two polymorphisms (rs1840680 and rs2305619) in the PTX3 gene were determined by real-time PCR. PTX3 plasma levels were measured by Enzyme-linked Immunosorbent Assay (ELISA). Our data show a significant association between PTX3 polymorphisms and HCC occurrence in univariate and multivariate analysis (P = 0.024). Patients with HCC had higher PTX3 plasma levels compared to individuals with mild or severe fibrosis (P < 0.0001 and P = 0.002, respectively). In addition, PTX3 rs2305619 polymorphism and plasma levels were correlated with Child-Pugh scores B and C in HCC individuals. PTX3 seems to be a risk factor for HCC occurrence in chronic hepatitis C. This is the first study that evaluates PTX3 in the context of hepatitis C.
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Affiliation(s)
- R F Carmo
- Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Brazil.,Rede Nordeste de Biotecnologia (RENORBIO), Recife, Brazil
| | - D Aroucha
- Instituto do Fígado de Pernambuco (IFP), Recife, Brazil.,Universidade de Pernambuco (UPE), Recife, Brazil
| | - L R S Vasconcelos
- Instituto do Fígado de Pernambuco (IFP), Recife, Brazil.,Centro de Pesquisas Aggeu Magalhães (CPqAM/FIOCRUZ), Recife, Brazil
| | - L M M B Pereira
- Instituto do Fígado de Pernambuco (IFP), Recife, Brazil.,Universidade de Pernambuco (UPE), Recife, Brazil
| | - P Moura
- Universidade de Pernambuco (UPE), Recife, Brazil
| | - M S M Cavalcanti
- Rede Nordeste de Biotecnologia (RENORBIO), Recife, Brazil.,Universidade de Pernambuco (UPE), Recife, Brazil
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23
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Mamede AC, Guerra S, Laranjo M, Carvalho MJ, Oliveira RC, Gonçalves AC, Alves R, Prado Castro L, Sarmento-Ribeiro AB, Moura P, Abrantes AM, Maia CJ, Botelho MF. Selective cytotoxicity and cell death induced by human amniotic membrane in hepatocellular carcinoma. Med Oncol 2015; 32:257. [PMID: 26507652 DOI: 10.1007/s12032-015-0702-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 10/12/2015] [Indexed: 12/20/2022]
Abstract
Hepatocellular carcinoma (HCC) has a worldwide high incidence and mortality. For this reason, it is essential to invest in new therapies for this type of cancer. Our team already proved that human amniotic membrane (hAM) is able to inhibit the metabolic activity of several human cancer cell lines, including HCC cell lines. Taking into account the previously performed work, this experimental study aimed to investigate the pathways by which hAM protein extracts (hAMPEs) act on HCC. Our results showed that hAMPE reduce the metabolic activity, protein content and DNA content in a dose- and time-dependent manner in all HCC cell lines. This therapy presents selective cytotoxicity, since it was not able to inhibit a non-tumorigenic human cell line. In addition, hAMPE induced cell morphology alterations in all HCC cell lines, but death type is cell line dependent, as proved by in vitro and in vivo studies. In conclusion, hAMPE have a promising role in HCC therapy, since it is capable of inducing HCC cytotoxicity and cell death.
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Affiliation(s)
- A C Mamede
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal. .,CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal. .,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal. .,CNC.IBILI, University of Coimbra, Coimbra, Portugal.
| | - S Guerra
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.
| | - M Laranjo
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - M J Carvalho
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal.,Obstetrics Service, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - R C Oliveira
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,Anatomic Pathology Service, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - A C Gonçalves
- CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal.,Applied Molecular Biology and Hematology Group, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - R Alves
- CNC.IBILI, University of Coimbra, Coimbra, Portugal.,Applied Molecular Biology and Hematology Group, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - L Prado Castro
- Anatomic Pathology Service, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - A B Sarmento-Ribeiro
- CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal.,Applied Molecular Biology and Hematology Group, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - P Moura
- Obstetrics Service, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - A M Abrantes
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - C J Maia
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - M F Botelho
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,CIMAGO, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
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24
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25
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Areia A, Vale-Pereira S, Alves V, Rodrigues-Santos P, Moura P, Mota-Pinto A. Membrane progesterone receptors in human regulatory T cells: a reality in pregnancy. BJOG 2015; 122:1544-50. [PMID: 25639501 DOI: 10.1111/1471-0528.13294] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2014] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To provide evidence of the existence of membrane progesterone receptor alpha (mPRα) on regulatory T cells (Treg) in peripheral blood during pregnancy, postulating a possible explanation for the effect of progesterone on preterm birth. DESIGN Cross-sectional study. SETTING Tertiary Obstetric Department in a University Hospital. POPULATION Healthy pregnant women. METHODS Treg cells from peripheral blood samples were studied by flow cytometry using multiple monoclonal antibody expression. MAIN OUTCOME MEASURES Evaluate the number and percentage of CD4(+) CD25(high) CD127(low) , the number and percentage of Treg cells among the total CD4(+) T cells, and the percentage and mean fluorescence intensity (MFI) of mPRα in that population, using several gating strategies. RESULTS 43 peripheral blood samples were collected from healthy women during pregnancy, whose median gestational age was 28.7 ± 7.1 (16-40) weeks. The percentage of CD4(+) in the total lymphocytes was 43% (32-51) and the percentage of CD4(+) CD25(high) CD127(low) was 4.8% (1.6-5.9), with only 45% (16-72) of those cells expressing the intracellular marker FoxP3 (Treg cell pool). We confirmed the existence of mPRα in that specific population because 8.0% (2.02-33) of the Treg cells were marked with the specific monoclonal antibody, with an mPRα(+) MFI of 719 (590-1471). CONCLUSIONS This research shows that Treg cells express mPRα during pregnancy, which might play an important role in immune modulation by progesterone.
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Affiliation(s)
- A Areia
- Faculty of Medicine, University of Coimbra and Obstetric Unit, Coimbra University Hospital Centre, Coimbra, Portugal
| | - S Vale-Pereira
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - V Alves
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | | | - P Moura
- Faculty of Medicine, University of Coimbra and Obstetric Unit, Coimbra University Hospital Centre, Coimbra, Portugal
| | - A Mota-Pinto
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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26
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Domingues AP, Moura P, Vieira DN. Obstetric litigation: The importance of the quality of clinical files and its influence on expertise conclusions. J OBSTET GYNAECOL 2014; 35:146-9. [DOI: 10.3109/01443615.2014.948816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Guerra S, Mamede A, Laranjo M, Pires A, Carvalho M, Brito A, Moura P, Abrantes A, Maia C, Botelho M. 750: Human amniotic membrane secreted factors plus chemotherapy: A mishmash of effects? Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50658-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Holanda K, Lucena-Araujo AR, Quintas A, Mendonça T, Lima A, Vasconcelos LR, Moura P, Cavalcanti M, Machado C, Araújo AS, Bezerra MA. Mannose-binding lectin 2 (MBL2) gene polymorphisms do not influence frequency of infections in chronic lymphocytic leukemia patients. Rev Bras Hematol Hemoter 2014; 36:29-34. [PMID: 24624033 PMCID: PMC3948663 DOI: 10.5581/1516-8484.20140010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 06/11/2013] [Indexed: 01/07/2023] Open
Abstract
Background Infectious complications represent the main cause of morbidity and mortality in chronic lymphocytic leukemia. It has been reported that polymorphisms of the mannose-binding lectin 2 (MBL2) genes are correlated with MBL protein serum levels and, consequently, are associated with the development of infectious diseases. Objective The purpose of this study was to investigate the possible association between MBL2 gene polymorphisms and risk of infection in chronic lymphocytic leukemia patients. Methods Peripheral blood samples from 116 chronic lymphocytic leukemia patients were collected; after genomic DNA extraction, real time polymerase chain reaction was used to determine the polymorphisms of the promoter region and exon 1 of the MBL2 gene. Results A high frequency of Binet stage A (p-value = 0.005) and absence of splenomegaly (p-value = 0.002) were observed in patients with no infection; however, variant alleles/ genotypes and haplotypes of this gene had no impact on the risk of infection. Conclusion To the authors’ knowledge, this is the first study describing the association between MBL2 polymorphisms and infectious disease in chronic lymphocytic leukemia. Although it was not possible to demonstrate any influence of MBL2 polymorphisms as a genetic modulator of infection in chronic lymphocytic leukemia, the authors believe that the present data are clinically relevant and provide the basis for future studies. © 2014 Associação Brasileira de Hematologia, Hemoterapia e Terapia Celular. All rights reserved.
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Affiliation(s)
| | | | - Adônis Quintas
- Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil
| | | | - Aleide Lima
- Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil
| | | | - Patrícia Moura
- Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil
| | | | - Cíntia Machado
- Fundação de Hematologia e Hemoterapia de Pernambuco (HEMOPE), Recife, PE, Brazil
| | - Aderson Silva Araújo
- Fundação de Hematologia e Hemoterapia de Pernambuco (HEMOPE), Recife, PE, Brazil
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29
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Mamede AC, Laranjo M, Carvalho MJ, Abrantes AM, Pires AS, Brito AF, Moura P, Maia CJ, Botelho MF. Effect of amniotic membrane proteins in human cancer cell lines: an exploratory study. J Membr Biol 2014; 247:357-60. [PMID: 24577414 DOI: 10.1007/s00232-014-9642-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 02/12/2014] [Indexed: 01/22/2023]
Abstract
Human amniotic membrane (hAM) has recently drawn attention as an upcoming anti-cancer therapy. Regarding the strategies which have already investigated, little is known about hAM protein extracts (hAMPE) effect on cancer. So, this work aims to study the effect of hAMPE in metabolic activity of several human cancer cell lines. hAMPE were mechanically obtained, thus avoiding the effect of detergents and other reagents commonly used in protein extraction under the cell lines studied. After quantification of proteins in hAMPE, their effect on the metabolic activity of 21 human cancer cell lines was assessed by 3-(4,5-dimethylthia-zolyl-2)2,5-diphenyltetrazolium bromide (MTT) assay. Our results indicate that there is an inhibition of metabolic activity until 25 and 50% in two and seven cell lines, respectively. Five cell lines proved to be very sensitive to hAMPE, being its metabolic activity more than 50% inhibited. Our results show that hAMPE can inhibit the metabolic activity of some human cancer cell lines. However, research about this cell line-dependent response to hAMPE becomes indispensable.
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Affiliation(s)
- Ana Catarina Mamede
- Biophysics Unit, Faculty of Medicine, University of Coimbra, Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal,
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30
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Barraud S, Gonzalez-Merchan C, Nascimento N, Moura P, Silva A. A method for evaluating the evolution of clogging: application to the Pampulha Campus infiltration system (Brazil). Water Sci Technol 2014; 69:1241-1248. [PMID: 24647190 DOI: 10.2166/wst.2013.819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In order to evaluate the hydraulic performance of stormwater infiltration trenches, a study was undertaken to assess clogging and its distribution between the bottom and the sides. The method used was based on the calibration of the hydraulic resistance event by event according to Bouwer's model and applied to a demonstration trench in Belo-Horizonte monitored in the framework of the European Project Switch. The calibration was performed by minimizing the distance between measured and modeled infiltration flow rates and by using continuous measurements of rainfall, inflow, water temperature and depth in the trench. The study showed that the methodology and particularly Bouwer's model was able to produce satisfactory results. It revealed a significant clogging evolution within a year, with global resistance increasing by a factor of 9. A significant difference between the bottom and the sides was observed; the bottom being more rapidly prone to clogging. Sudden fluctuations of the hydraulic resistance of the bottom were found that could be explained by very high concentrations of total suspended solids from inflows (about 2,000 mg/L). Clogging of the sides evolves over the time but with a very low rate.
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Affiliation(s)
- S Barraud
- Université de Lyon, INSA de Lyon, Université Lyon 1, LGCIE, 34 avenue des Arts, 69621 Villeurbanne, France E-mail:
| | - C Gonzalez-Merchan
- Université de Lyon, INSA de Lyon, Université Lyon 1, LGCIE, 34 avenue des Arts, 69621 Villeurbanne, France E-mail:
| | - N Nascimento
- Departamento de Engenharia Hidráulica e Recursos Hídricos, Universidade Federal de Minas Gerais, Escola de Engenharia, Av. Antônio Carlos, 6627, 31270-901 - Belo Horizonte, MG, Brazil
| | - P Moura
- Departamento de Engenharia Hidráulica e Recursos Hídricos, Universidade Federal de Minas Gerais, Escola de Engenharia, Av. Antônio Carlos, 6627, 31270-901 - Belo Horizonte, MG, Brazil
| | - A Silva
- Belo Horizonte Municipality, Av. Afonso Pena, 4000, 30130-009 - Belo Horizonte, MG, Brazil
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Ferreira AF, Ortigueira J, Alves L, Gouveia L, Moura P, Silva C. Biohydrogen production from microalgal biomass: energy requirement, CO2 emissions and scale-up scenarios. Bioresour Technol 2013; 144:156-164. [PMID: 23867534 DOI: 10.1016/j.biortech.2013.06.079] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 06/18/2013] [Accepted: 06/20/2013] [Indexed: 06/02/2023]
Abstract
This paper presents a life cycle inventory of biohydrogen production by Clostridium butyricum through the fermentation of the whole Scenedesmus obliquus biomass. The main purpose of this work was to determine the energy consumption and CO2 emissions during the production of hydrogen. This was accomplished through the fermentation of the microalgal biomass cultivated in an outdoor raceway pond and the preparation of the inoculum and culture media. The scale-up scenarios are discussed aiming for a potential application to a fuel cell hybrid taxi fleet. The H2 yield obtained was 7.3 g H2/kg of S. obliquus dried biomass. The results show that the production of biohydrogen required 71-100 MJ/MJ(H2) and emitted about 5-6 kg CO2/MJ(H2). Other studies and production technologies were taken into account to discuss an eventual process scale-up. Increased production rates of microalgal biomass and biohydrogen are necessary for bioH2 to become competitive with conventional production pathways.
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Affiliation(s)
- Ana F Ferreira
- IDMEC, Instituto Superior Técnico, Technical University of Lisbon, Lisbon, Portugal.
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Aroucha D, do Carmo R, Moura P, Silva J, Vasconcelos L, Cavalcanti M, Muniz M, Aroucha M, Siqueira E, Cahú G, Pereira L, Coêlho M. High tumor necrosis factor-α/interleukin-10 ratio is associated with hepatocellular carcinoma in patients with chronic hepatitis C. Cytokine 2013; 62:421-5. [DOI: 10.1016/j.cyto.2013.03.024] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 03/23/2013] [Accepted: 03/23/2013] [Indexed: 12/15/2022]
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Cunha ME, Gamboa M, Castanho S, Quental-Ferreira H, Ribeiro L, Soares F, Gavaia P, Mateus M, Moura P, Cordeiro N, Gonçalves R, Pousão-Ferreira P. Fish larval performance fed with copepods (Acartia grani) and the dinoflagellate (Oxyrrhis marina) as supplement: the case of dusky grouper (Epinephelus marginatus). Commun Agric Appl Biol Sci 2013; 78:97-100. [PMID: 25141635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Ferreira V, Moura P, Crovella S, Sobhie Diaz R, Castelo Filho A, Ximenes R, Arraes LC. The Influence of HIV-1 Subtype in the Response to Therapeutic Dendritic Cell Vaccine. Open AIDS J 2012; 6:289-92. [PMID: 23289053 PMCID: PMC3534477 DOI: 10.2174/1874613601206010289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 06/10/2012] [Accepted: 06/12/2012] [Indexed: 11/22/2022] Open
Abstract
In the present study, we investigated the influence of HIV-1 subtype in the response to the dendritic cell (DC)
therapeutic vaccine for HIV. HIV-1 viral load and TCD8+/TCD4+ cell counts for up to 48 weeks after vaccination. Out of
19 immunized subjects, 13 were infected by subtype B, 5 by subtype F, and 1 by subtype D. Overall, 42.1% (8/19)
achieved a viral load decline of ≥ 1 log10 sustained up to 48 weeks after immunization. Such magnitude of viral load drop
was seen in 80% (4/5) of subtype F infected patients, and in 23.0% (3/13) of the subtype B infected ones (p=0.08).
Moreover, mean viral load decline was 1.32 log10, for subtype F infected individuals compared to 0.5 log10 among subtype
B infected patients (p=0.01). The variation in TCD4+ cell count was not related to HIV-1 subtype. Larger studies are
necessary to confirm the efficacy of this immunotherapy and the differential response according to the background genetic
diversity of HIV-1.
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do Carmo RF, de Almeida DB, Aroucha DCBL, Vasconcelos LRS, de Moraes ACP, de Mendonça Cavalcanti MDS, de Morais CNL, Pereira LMMB, Moura P. Plasma myeloperoxidase levels correlate with hepatocellular carcinoma in chronic hepatitis C. Hum Immunol 2012; 73:1127-31. [DOI: 10.1016/j.humimm.2012.07.322] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 06/21/2012] [Accepted: 07/14/2012] [Indexed: 01/06/2023]
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Branco P, Monteiro M, Moura P, Albergaria H. Survival rate of wine-related yeasts during alcoholic fermentation assessed by direct live/dead staining combined with fluorescence in situ hybridization. Int J Food Microbiol 2012; 158:49-57. [PMID: 22819715 DOI: 10.1016/j.ijfoodmicro.2012.06.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 06/21/2012] [Accepted: 06/30/2012] [Indexed: 10/28/2022]
Abstract
Real-time detection of microorganisms involved in complex microbial process, such as wine fermentations, and evaluation of their physiological state is crucial to predict whether or not those microbial species will be able to impact the final product. In the present work we used a direct live/dead staining (LDS) procedure combined with fluorescence in situ hybridization (FISH) to simultaneously assess the identity and viability of Saccharomyces cerevisiae (Sc) and Hanseniaspora guilliermondii (Hg) during fermentations performed with single and mixed cultures. The population evolution of both yeasts was determined by plating and by LDS combined with species-specific FISH-probes labeled with Fluorescein. Since the FISH method involves the permeabilization of the cell membrane prior to hybridization and that it may influence the free diffusion of PI in and out of the cells, we optimized the concentration of this dye (0.5 μg of PI per 10(6) cells) for minimal diffusion (less than 2%). Fluorescent cells were enumerated by hemocytometry and flow cytometry. Results showed that the survival rate of Sc during mixed cultures was high throughout the entire process (60% of viable cells at the 9th day), while Hg began to die off at the 2nd day, exhibited 98% of dead cells at the 3rd day (45 g/l of ethanol) and became completely unculturable at the 4th day. However, under single culture fermentation the survival rate and culturability of Hg decreased at a much slower pace, exhibiting at the 7th day (67 g/l of ethanol) 8.7×10(4) CFU/ml and 85% of dead cells. Thus, our work demonstrated that the LDS-FISH method is able to simultaneously assess the viability and identity of these wine-related yeast species during alcoholic fermentation in a fast and reliable way. In order to validate PI-staining as a viability marker during alcoholic fermentation, we evaluated the effect of ethanol on the membrane permeability of Sc and Hg cells, as well as their capacity to recover membrane integrity after being exposed to different levels of ethanol (1%, 6%, 10%, 12% v/v). Results showed that while Sc cells were able to recover membrane integrity after ethanol exposure, Hg cells were not. However, under alcoholic fermentation Sc cells didn't recover membrane integrity after the mid-term (4-5 days) of alcoholic fermentation.
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Affiliation(s)
- Patrícia Branco
- Unidade Bioenergia, LNEG, Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, Portugal
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Cavalcanti I, Silva B, Peres N, Moura P, Sotomayor M, Guedes M, Dutra R. A disposable chitosan-modified carbon fiber electrode for dengue virus envelope protein detection. Talanta 2012; 91:41-6. [DOI: 10.1016/j.talanta.2012.01.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2011] [Revised: 12/24/2011] [Accepted: 01/01/2012] [Indexed: 01/10/2023]
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Ferreira A, Magalhães M, Carvalho M, Pais M, Freitas L, Regedor A, Moura P. O19. Kidney transplantation and pregnancy: Maternal and fetal outcome. Pregnancy Hypertens 2011; 1:265-6. [DOI: 10.1016/j.preghy.2011.08.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Baptista E, Moita B, Gomes A, Bento N, Pais M, Marta E, Moura P. O5. Low-dose aspirin therapy in pregnant women with chronic hypertension. Pregnancy Hypertens 2011; 1:259. [DOI: 10.1016/j.preghy.2011.08.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Raposo S, Carvalho M, Ferreira A, Campos S, Vasco E, Bento N, Pais M, Jardim O, Moura P. P16. Uterine artery Doppler ultrasonography and pre-eclampsia. Pregnancy Hypertens 2011; 1:280-1. [DOI: 10.1016/j.preghy.2011.08.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Moita B, Baptista E, Marques C, Bombas T, Bento N, Pais M, Moura P. P21. Role of uterine artery doppler in pregnant women with chronic hypertension. Pregnancy Hypertens 2011; 1:283. [DOI: 10.1016/j.preghy.2011.08.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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de Melo FM, Vasconcelos LRS, do Carmo RF, Silva BS, Moura P, Cavalcanti MDD, Pereira LMMB, Lacerda HR. MBL2 polymorphism and autoimmune markers: reconsidering the complexity of biological systems in the choice of controls. Int J Immunogenet 2011. [DOI: 10.1111/j.1744-313x.2010.00982.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Filho RM, Carmo RF, Catsman C, Souza C, Silva A, Moura P, Tenorio AL, Vasconcelos LRS, Cavalcanti MDSM, Pereira LMMB. High frequency of variant alleles of the mannose-binding lectin 2 (MBL2) gene are associated with patients infected by hepatitis B virus. Viral Immunol 2011; 23:449-53. [PMID: 20712490 DOI: 10.1089/vim.2009.0105] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Patients with hepatitis B virus (HBV) infection may develop severe chronic liver disease. Carriers of HBV have an increased risk of developing cirrhosis, hepatic decompensation, and hepatocellular carcinoma. Worldwide an estimated 350 million people are infected with HBV, and 15-40% will develop serious sequelae in their lifetime. In our study we investigated the association of single nucleotide polymorphisms (SNPs) in the first exon and promoter region of the mannose-binding lectin gene 2 (MBL2) situated on chromosome 10, with susceptibility to HBV infection. One-hundred and two patients infected with HBV were included in this study, and 232 uninfected individuals were used as healthy controls. Genotyping of the first exon (alleles A/O) was performed using a melting temperature assay. Genotyping of the promoter region (-550 H/L; -221 Y/X) was performed using the Taqman PCR technique. In the HBV-infected group we found a significantly increased frequency of haplotypes associated with low serum MBL. Our findings may indicate that MBL has a protective role against HBV infection in the studied population.
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Moura P, Barraud S, Baptista MB, Malard F. Multicriteria decision-aid method to evaluate the performance of stormwater infiltration systems over the time. Water Sci Technol 2011; 64:1993-2000. [PMID: 22105120 DOI: 10.2166/wst.2011.154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Nowadays, stormwater infiltration systems are frequently used because of their ability to reduce flows and volumes in downstream sewers, decrease overflows in surface waters and make it possible to recharge groundwater. Moreover, they come in various forms with different uses. Despite these advantages the long term sustainability of these systems is questionable and their real performances have to be assessed taking into account various and sometimes conflicting aspects. To address this problem a decision support system is proposed. It is based on a multicriteria method built to help managers to evaluate the performance of an existing infiltration system at different stages of its lifespan and identify whether it performs correctly or not, according to environmental, socio-economic, technical and sanitary aspects. The paper presents successively: the performance indicators and the way they were built, the multicriteria method to identify if the system works properly and a case study.
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Affiliation(s)
- P Moura
- Departamento de Engenharia Hidráulica e Recursos Hídricos da UFMG, Escola de Engenharia, Belo Horizonte, Brazil.
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Carréra MC, Moura P, Crovella S, de Souza PRE, de Alencar LCA, Sarinho E. High polymorphism of the MBL2 gene in patients with atopic dermatitis. Ann Allergy Asthma Immunol 2010; 105:39-42. [PMID: 20642202 DOI: 10.1016/j.anai.2010.03.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Low serum levels of mannose-binding lectin (MBL) are determined mainly by variant alleles of the MBL2 gene and it has been suggested that MBL may play a role in the susceptibility to atopic dermatitis (AD). OBJECTIVE The aim was to investigate the difference of the frequency of MBL2 variant alleles in AD patients and in a group of individuals without AD, and associate the MBL2 alleles with AD severity. METHODS MBL2 variant allele's frequency was investigated in 131 children with AD and 165 healthy children/adolescents matched by convenience. The severity of disease was graded according to the SCORing Atopic Dermatitis (SCORAD) index. The first exon variants were called "O" and the wild type "A". The variants in the promoter were H/L at -550 and X/Y at -221, determined by Real Time PCR. RESULTS Children with AD had higher frequency of allele O and the genotypes related to low or deficient levels of MBL, when compared to the healthy group (p = 0.0012 and p < 0.001, respectively), but not with AD severity. CONCLUSION Low or deficient MBL serum levels determined genetically may contribute to the predisposition for AD, but not for disease severity.
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Silva BVM, Cavalcanti IT, Mattos AB, Moura P, Sotomayor MDPT, Dutra RF. Disposable immunosensor for human cardiac troponin T based on streptavidin-microsphere modified screen-printed electrode. Biosens Bioelectron 2010; 26:1062-7. [PMID: 20863683 DOI: 10.1016/j.bios.2010.08.051] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 08/14/2010] [Accepted: 08/17/2010] [Indexed: 10/19/2022]
Abstract
Screen-printed electrodes (SPE) have been widely used in the design of disposable sensors bringing advances in the use of electrochemical immunosensors for in field-clinical analysis. In this work, streptavidin polystyrene microspheres were incorporated to the electrode surface of SPEs in order to increase the analytical response of the cardiac troponin T (cTnT), a specific biomarker for the acute myocardial infarction diagnosis. The precise calculation of the stoichiometric streptavidin-biotin ratio [1:4] allowed the increase of sensitivity and stability of the immunosensor response to the cTnT analyte. The surface of the immunosensor was characterized by scanning electron microscopy and cyclic voltammetry. It was observed that the use of streptavidin microspheres significantly increased the analytical sensitivity of the electrode in 8.5 times, showing a curve with a linear response range between 0.1 and 10 ngmL(-1) of cTnT and a detection limit of 0.2 ngmL(-1). The proposed SPE showed ease preparation and high sensitivity allowing the detection of cTnT in the range of clinical levels. The new device coupled with a portable electrochemical analyzer shows great promise for point-of-care quantitative testing of necrosis cardiac proteins.
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Affiliation(s)
- Bárbara V M Silva
- Laboratório de Pesquisa em Diagnóstico/LAPED, Pronto Socorro Cardiológico de Pernambuco/PROCAPE, Universidade de Pernambuco, Rua dos Palmares, s/n, 50100-130 Recife-PE, Brazil
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Gouveia L, Marques AE, Sousa JM, Moura P, Bandarra NM. Microalgae – source of natural bioactive molecules as functional ingredients. ACTA ACUST UNITED AC 2010. [DOI: 10.1616/1476-2137.15884] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Mendonça TF, Oliveira MCVC, Vasconcelos LRS, Pereira LMMB, Moura P, Bezerra MAC, Santos MNN, Araújo AS, Cavalcanti MSM. Association of variant alleles of MBL2 gene with vasoocclusive crisis in children with sickle cell anemia. Blood Cells Mol Dis 2010; 44:224-8. [PMID: 20172753 DOI: 10.1016/j.bcmd.2010.02.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Revised: 11/26/2009] [Accepted: 01/20/2010] [Indexed: 11/17/2022]
Abstract
Vasoocclusive crisis (VOC) is the major cause of morbidity and mortality in sickle cell anemia (SCA), which is caused by the occlusion of blood vessels, followed by ischemia or infarct, resulting in progressive damage to organs. However, this clinical manifestation is variable, indicating that this process could be influenced by modifier genes. The gene MBL2 which codes for mannose-binding lectin (MBL) has been associated with modifications in the progression of infectious and inflammatory vascular diseases. The aim of this study was to determine the frequency of the polymorphisms of exon 1 (alleles A/O) and promoter region -221 (alleles Y/X) of MBL2 in children with SCA and to verify their association with VOC. The determination of the polymorphism of exon 1 and the promoter region of MBL2 was performed by SYBR GREEN((R)) and Taqman((R)) system, respectively. In the patients with SCA, the frequency of the genotype related to high production of MBL was 0.46 (YA/YA) and for intermediate/low production was 0.54 (YA/XA, XA/XA, YA/YO, XA/YO, YO/YO). The frequency of the genotypes and haplotypes of MBL2 in patients with SCA did not differ from control individuals. The populations were in Hardy-Weinberg equilibrium. The patients were divided into two groups. The groups were separated by the frequency of VOC, which was defined by the total of VOC episodes divided by the age of the children at the end of this study. Since, we choose a cut point in FVOC <1 (n=48) (which we considered of mild presentation of disease) and FVOC >or=1 (n=39) (higher severity). In children with SCA, the frequency of the genotypes of MBL2 of intermediate/low expression for MBL was associated with FVOC >or=1 (p=0.0188 OR=3.15 CI=1.19-8.50). The results suggest that MBL2 polymorphism at promoter and first exon of MBL2 associated with low serum levels and structural alterations of MBL could modify the phenotype of the child with SCA related to VOC.
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Affiliation(s)
- T F Mendonça
- Biological Science Institute and College of Medical Sciences, University of Pernambuco, Recife, Brazil
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Rudge M, Maesta I, Rudge C, Peraçoli J, Moura P, Costa R, Calderon I. O812 Stratified maternal and perinatal care network, a successful program in Brazil - twelve years follow-up: 1995-2006. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61185-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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